I have a Roku and like it but really wish it had better support for playing off of USB and network shares - this is the one reason I still use my WDTV Live as often as I do. Oh, not to mention the WDTV supports every format under the sun and streams my 3DTV with zero issues too.

I know there is a USB app for Roku but it sucks and doesn't work consistently.

I know I could use Plex to retrieve files from my shares but I don't care for navigation in this app much.

Anyway, glad to see Roku continues to make nice updates, I just wish there was a single solution at this point.